Neil Houghton wrote:
Eg I just sent a message with a jpeg attachment but wanted to copy the
message to our committee (we have a committee only yahoo group set up) - the
finder showed the attachment to be 880k and the message was only a couple of
paragraphs so I thought it would be OK, but it was still rejected and on
examining the sent message I noticed that the mail window showed the
attachment as 1MB - I presumed that this was just an approximation or does
the email program increase the size of the attachment?
I guess my real question is how can I see the size of the total message to
see if it exceeds 1MB BEFORE I actually send it and then have it rejected.
The reason why your 880k message "grew" in size was because of something
called encoding. It may come as a complete surprise to you and others,
but you cannot send attachments using email and anyone who says
otherwise does not understand how it works.
When you "attach" something to an email message, the attachment is
translated into text, and that text is sent as part of your message. If
you were to open the message you'd see all manner of gobbledygook and
not your attachment.
What makes it possible to make sense of that included piece of text,
commonly referred to as "the attachment" is that there are all manner of
standards, the most common today is MIME, that describe how your file
has been translated into text.
The limit of file size is not that of the attachment, but of the email
message.
The limit is a sensible one and you should adhere to it. It makes much
more sense to send a URL, that way the recipient can decide if they wish
to download your file now, or at a later stage. This might not make much
sense to you, but imagine that the recipient is reading email on their
mobile phone. They are charged per *kilobyte*, thus your 880k message is
costing the recipient something like 2.2c per K, thus more than $20,
just for your email.
So, don't send attachments to groups of people, send them a URL instead.
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Onno Benschop
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